Amprobe 33XR-A Manuale utente

Supplement

Title: 33XR-A Users Supplement Issue: 1

Part Number: 2728921 Issue Date: 9/06

Print Date: July 2006 Page Count: 1

Revision/Date:

This supplement contains information

necessary to ensure the accuracy of the

above manual.

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33XR-A Users Supplement

9/06 1

Change #1

On page 9, under General Specification, change

Operating environment:

From: 0 ºC to 50 ºC at <70% R.H.

To: 0 ºC to 50 ºC at <70% R.H. for all functions

except 10A ranges

10A ranges: 0 ºC to 40 ºC at <70% R.H.

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33XR-A33XR-A

Professional

Digital

Multimeter

with Temperature

and Capacitance

Users Manual

• Mode d'emploi

• Bedienungshandbuch

• Manuale d'Uso

• Manual de uso

Please Recycle

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MADE IN TAIWAN

PATENTS PENDING

www.amprobe.com

33XR-A

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33XR-A

Professional Digital Multimeter

Users Manual

•Mode d’emploi

•Bedienungshandbuch

•Manuale d’Uso

•Manual de uso

PN 2728921

July 2006

©Amprobe©Test Tools.

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XWSafety Information..................................................................................2

Introduction.....................................................................................................3

Making Measurements.....................................................................................3

Verify Instrument Operation.......................................................................3

Correcting an Overload (o) Indication ......................................................3

Measuring DC Voltage .......................................See Figure -1- .................3

Measuring AC Voltage........................................See Figure -2- .................3

Preparing for Current Measurements.........................................................3

Measuring DC Current .......................................See Figure -3- .................4

Measuring AC Current........................................See Figure -4- .................4

Measuring Resistance .......................................See Figure -5- .................4

Measuring Continuity ........................................See Figure -6- .................4

Checking Diodes ................................................See Figure -7- .................4

Measuring Capacitance .....................................See Figure -8- .................5

Measuring Temperature ....................................See Figure -9- .................5

Measuring Frequency ........................................See Figure -10- ...............5

Additional Features ..........................................................................................5

Input Test Lead Warning............................................................................5

MIN MAX Measurements...........................................................................5

Peak Hold Measurements ..........................................................................6

Auto Power Off ..........................................................................................6

Relative Measurements..............................................................................6

HOLD Measurements.................................................................................6

Product Maintenance.......................................................................................7

Cleaning ....................................................................................................7

Troubleshooting ........................................................................................7

Battery and Fuse Replacement...........................See Figure -11- ...............7

Repair ..............................................................................................................7

WARRANTY...............................................................................................8

Specifications ..................................................................................................9

Users Manual

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XWSafety Information

To avoid electric shock, personal injury, damage to the meter or the equipment

under test, adhere to the following practices:

•The 33XR-A Digital Multimeter is UL, cUL, and EN61010-1 certified for

Installation Category III – 600V and Category II – 1000V. It is recommended for

use with local level power distribution, appliances, portable equipment, etc,

where only smaller transient overvoltages may occur, and not for primary

supply lines, overhead lines and cable systems.

•Do not exceed the maximum overload limits per function (see specifications)

nor the limits marked on the instrument itself. Never apply more than

1000 V dc/750 V ac between the test lead and earth ground.

•Inspect DMM, test leads and accessories before every use. Do not use any

damaged part.

•Never ground yourself when taking measurements. Do not touch exposed

circuit elements or probe tips.

•Do not operate the instrument in an explosive atmosphere.

•Exercise extreme caution when measuring voltage >20 V // current >10 mA //

AC power line with inductive loads // AC power line during electrical storms //

current, when the fuse blows in a circuit with open circuit voltage >1000 V //

servicing CRT equipment.

•Always measure current in series with the load – NEVER ACROSS a voltage

source. Check fuse first. Never replace a fuse with one of a different rating.

•Do not change the position of the Function/Range Switch while the MIN MAX,

HOLD, or REL feature is enabled. Erroneous readings will result.

•Remove test leads before opening battery or case to change battery or fuses.

Symbols Used in this Manual

B Battery WRefer to the manual

TDouble insulated XDangerous Voltage

FDirect Current JEarth Ground

BAlternating Current RAudible tone

P Complies with EU directives

I Fuse >

Underwriters

Laboratories, Inc

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Introduction

The 33XR-A is a manual ranging handheld digital multimeter for measuring or

testing the following:

•DC and AC voltage •Temperature

•DC and AC current •Capacitance

•Resistance •Diodes

•Frequency •Continuity

Additional features include the following modes:

MIN MAX, HOLD, REL (relative), and Peak±

Making Measurements

Verify Instrument Operation

Before attempting to make a measurement, verify that the instrument is operational

and the battery is good. If the instrument is not operational, have it repaired before

attempting to make a measurement.

Correcting an Overload (o) Indication W

An oindication may appear on the display to indicate that an overload condition

exists. For voltage and current measurements, an overload should be immediately

corrected by selecting a higher range. If the highest range setting does not

eliminate the overload, interrupt the measurement until the problem is identified

and eliminated. The oindication is normal for some functions; for example,

resistance, continuity, and diode test.

Measuring DC Voltage See Figure -1-

1. Set the Range Switch to an appropriate v range.

Select the highest range and work down if the voltage level is unknown.

2. Connect the Test Leads: Red to E, Black to COM

3. Connect the Test Probes to the circuit test points.

4. Read the display, and, if necessary, fix any overload (o) conditions.

Measuring AC Voltage See Figure -2-

1. Set the Range Switch to an appropriate V range.

Select the highest range and work down if the voltage level is unknown.

2. Connect the Test Leads: Red to E, Black to COM

3. Connect the Test Probes to the circuit test points

4. Read the display, and, if necessary, fix any overload (o) conditions.

Preparing for Current Measurements

•Turn off circuit power before connecting the test probes.

•Allow the meter to cool between measurements if current measurements

approach or exceeds 10 amps.

•A warning tone sounds if you connect a test lead to a current input before you

select a current range.

•Open circuit voltage at the measurement point must not exceed 1000 V.

•Always measure current in series with the load. Never measure current across a

voltage source.

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Measuring DC Current See Figure -3-

1. Set the Range Switch to an appropriate Arange.

Select the highest range and work down if the current level is unknown.

2. Connect the Test Leads: Red to mA or 10 A, Black to COM

3. Turn off power to the circuit being measured.

4. Open the test circuit (X) to establish measurements points.

5. Connect the Test Probes in series with the load.

6. Turn on power to the circuit being measured.

7. Read the display, and, if necessary, fix any overload (o) conditions.

Measuring AC Current See Figure -4-

1. Set the Range Switch to an appropriate arange.

Select the highest range and work down if the current level is unknown.

2. Connect the Test Leads: Red to mA or 10 A, Black to COM

3. Turn off power to the circuit being measured.

4. Open the test circuit (X) to establish measurements points.

5. Connect the Test Probes in series with the load.

6. Turn on power to the circuit being measured.

7. Read the display, and, if necessary, fix any overload (o) conditions.

Measuring Resistance See Figure -5-

1. Set the Range Switch to an appropriate Ωrange.

Select the highest range and work down if the resistance level is unknown.

2. Connect the Test Leads: Red to E, Black to COM

3. Turn off power to the circuit being measured. Never measure resistance across

a voltage source or on a powered circuit.

4. Discharge any capacitors that may influence the reading.

5. Connect the Test Probes across the resistance.

6. Read the display. If oappears on the highest range, the resistance is too large

to be measured.

Measuring Continuity See Figure -6-

1. Set the Range Switch to R.

2. Connect the Test Leads: Red to E, Black to COM

3. Turn off power to the circuit being measured.

4. Discharge any capacitors that may influence the reading.

5. Connect the Test Probes across the resistance.

6. Listen for the tone that indicates continuity (< 35 Ω).

Checking Diodes See Figure -7-

1. Set the Range Switch to G.

2. Connect the Test Leads: Red to E, Black to COM

3. Turn off power to the circuit being measured.

4. Free at least one end of the diode from the circuit.

5. Connect the Test Probes across the diode.

6. Read the display. A good diode has a forward voltage drop of about 0.6 V. An

open or reverse biased diode will read o.

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Measuring Capacitance See Figure -8-

1. Set the Range Switch to P.

2. Connect the Test Leads: Red to COM, Black to mA

3. Turn off power to the circuit being measured.

4. Discharge the capacitor using a 100 kΩresistor.

5. Free at least one end of the capacitor from the circuit.

6. Connect the Test Probes across the capacitor. When measuring an electrolytic

capacitor match the test lead polarity to the polarity of the capacitor.

7. Read the display.

Measuring Temperature See Figure -9-

1. Set the Range Switch to °C or °F.

2. Connect a TEMP adapter plug (XR-TA) to the E and COM inputs.

3. Connect the K-type thermocouple to the TEMP adapter.

Match the polarity of the adapter to the polarity of the thermocouple.

Note: Thermocouple is not intended for contact with liquids or electrical circuits.

4. Expose the thermocouple probe to the temperature to be measured.

5. Read the display.

Measuring Frequency See Figure -10-

1. Set the Range Switch to 1 MHz.

2. Connect the Test Leads: Red to Hz, Black to COM

3. Connect the Test Probes to the signal source.

4. Read the display. The Meter will autorange for the best resolution.

Additional Features

Input Test Lead Warning

The meter emits a continuous tone when a test lead is placed in the mA or 10 A

input jack and the selector switch is not set to a correct current range. (If the DMM

is connected to a voltage source with its leads connected for current, very high

current could result). All current ranges are protected by fast acting fuses.

MIN MAX Measurements

XWWARNING

To avoid erroneous readings, do not change the position of the

Function/Range Switch while the MIN MAX function is enabled.

The MIN MAX function reads and updates the display to show the maximum or

minimum value measured after you press the MIN MAX button.

Pressing the MIN MAX button for less than 1 second will put the meter into a mode

of displaying the maximum, minimum, or actual readings. Each time the button is

pressed, the meter will cycle to the next display mode as shown in the table below.

Press the MIN MAX button for more than 2 seconds to disable this feature.

Button Display Value Displayed

< 1 second MAX Maximum value after feature activated

< 1 second MIN Minimum value after feature activated

< 1 second MIN MAX (blinks) Actual input after feature activated

> 2 seconds Exit function

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